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what is a science project i can do with billiard balls?

what science project can be done with standard billiard balls and a ruler?

1. Place a few balls in line with a small gap between each.
Place the ruler on top of them, to demonstrate how a roller bearing works.

2. This doesn’t require a ruler.
Make a long shallow trough out of some hard material and make a curve out of this. (2 long parallel lengths of stiff GI wire will do admirably)
Place some balls in this.
Drop 1 ball so that it rolls onto one end.
Observe that only 1 ball flies out from the other end. WHY ?

Try with 2 balls rolling. WHY do 2 balls (and, not 1 with a higher velocity) fly out from the other end ? Explain what conservation of momentum is….

This entry was posted on Sunday, February 14th, 2010 at 1:50 am and is filed under billiard balls. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

5 Responses to “what is a science project i can do with billiard balls?”

  1. Steve N says:
    February 14, 2010 at 7:17 am

    Calculate angles and velocities of collisions to demonstrate conservation of momentum.
    References :

  2. toonydemon says:
    February 14, 2010 at 7:43 am

    u can hit it and see how far it goes or u can do it on the laws of motion
    References :

  3. Starfish says:
    February 14, 2010 at 8:25 am

    Put them all in a big fire to pinpoint the precise melting point then measure the directional flow of the mass to determine… never mind.

    .
    References :

  4. Vincent L says:
    February 14, 2010 at 8:30 am

    see how fast hamsters can dodge them?
    References :

  5. Longfellow says:
    February 14, 2010 at 8:53 am

    1. Place a few balls in line with a small gap between each.
    Place the ruler on top of them, to demonstrate how a roller bearing works.

    2. This doesn’t require a ruler.
    Make a long shallow trough out of some hard material and make a curve out of this. (2 long parallel lengths of stiff GI wire will do admirably)
    Place some balls in this.
    Drop 1 ball so that it rolls onto one end.
    Observe that only 1 ball flies out from the other end. WHY ?

    Try with 2 balls rolling. WHY do 2 balls (and, not 1 with a higher velocity) fly out from the other end ? Explain what conservation of momentum is….
    References :

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